70830000 has 150 divisors (see below), whose sum is σ = 248017484. Its totient is φ = 18864000.

The previous prime is 70829933. The next prime is 70830029. The reversal of 70830000 is 3807.

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 89607 + ... + 90393.

Almost surely, 2^70830000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70830000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124008742).

70830000 is an abundant number, since it is smaller than the sum of its proper divisors (177187484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70830000 is a wasteful number, since it uses less digits than its factorization.

70830000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 70830000 is about 8416.0560834633. The cubic root of 70830000 is about 413.7510230197.

Adding to 70830000 its reverse (3807), we get a palindrome (70833807).

The spelling of 70830000 in words is "seventy million, eight hundred thirty thousand".